Posted By Kieran J Duignan Jane Legally, physiologically and psychologically, it is very dubious whether you should try to specify an upper limit to the number of key depressions of a DSE user or operator. As the Guidance on the Health and Safety (Display Screen Equipment) Regulations 1992, the associated 2002 update and relevant research make clear, ergonomic management is needed to get the appropriate balance for healthy safe functioning. While the key factor in determining speed may be the task goal, the upper limit may be limited by a hugh range of objective factors (e.g. lighting, design of keyboard) and variable user characteristics. While it may appear simpler to specify some figure as 'maximum', it may also be very misleading to ordinary 'naive' DSE users and operators

Posted By Alec Wood 120wpm = 10 keystrokes per second! Wow!